kubernetes-via-kubeadm

How to deploy a Kubernetes cluster, on one or more hosts, including the Kubernetes dashboard, Prometheus and Grafana.

This step by step instruction tells you how to install a Kubernetes cluster for development via kubeadm. All you need is just one (or more) Fedora hosts running Docker.

By default you can't run applications on a Kubernetes master node and it is certainly not recommanded for production workloads. However, in case you want to setup a development Kubernetes cluster with just one or more hosts you can configure the master to schedule pods.

[root@nuc ~]# dnf install kubernetes kubernetes-client

[root@nuc ~]# systemctl enable kubelet && systemctl start kubelet

[root@nuc ~]# journalctl -u kubelet.service
Apr 01 15:38:29 nuc.bachstraat20 systemd[1]: Started Kubernetes Kubelet Server.
Apr 01 15:38:30 nuc.bachstraat20 kubelet[26127]: I0401 15:38:30.029968   26127 server.go:182] Version: v1.9.1
Apr 01 15:38:30 nuc.bachstraat20 kubelet[26127]: I0401 15:38:30.030074   26127 feature_gate.go:220] feature gates: &{{} map[]}
Apr 01 15:38:30 nuc.bachstraat20 kubelet[26127]: Error: failed to run Kubelet: unable to load client CA file /etc/kubernetes/pki/ca.crt: open /etc/kubernetes/pki/ca.crt: no such file or directory
Apr 01 15:38:30 nuc.bachstraat20 systemd[1]: kubelet.service: Main process exited, code=exited, status=1/FAILURE
Apr 01 15:38:30 nuc.bachstraat20 systemd[1]: kubelet.service: Unit entered failed state.
Apr 01 15:38:30 nuc.bachstraat20 systemd[1]: kubelet.service: Failed with result 'exit-code'.
Apr 01 15:38:39 nuc.bachstraat20 systemd[1]: Stopped Kubernetes Kubelet Server.

Notice that the kubelet.service logging is reporting errors! Don't worry. This is because it is not yet configuered.

Disable selinux

SELINUX is not yet support with kubeadm yet, so it must be turned off!

[root@nuc ~]# setenforce 0
[root@nuc ~]# sed -i 's/^SELINUX=.*$/SELINUX=disabled/' /etc/sysconfig/selinux

If you have multiple nodes, don't forget to apply these settings on all of them.

Open firewall ports for Kubernetes.

Since we have only one host that we use as master and node we apply both commands to our host.

Before open new ports in the firewall, lets save the current port list into a file for later:

[root@nuc ~]# firewall-cmd --list-ports | tee ${HOSTNAME}.ports
1025-65535/udp 1025-65535/tcp 80/tcp 443/tcp

Do this on all your nodes!

Now open the following ports on the master node:

[root@nuc ~]# for PORT in 6443 2379 2380 10250 10251 10252 10255; do \
	firewall-cmd --permanent --add-port=${PORT}/tcp --permanent; \
done
[root@nuc ~]# firewall-cmd --reload
[root@nuc ~]# firewall-cmd --list-ports

Open the following ports on the worker node(s).
If you have a node that will be acting as a master and as a worker node, then apply these also on that node.

[root@nuc ~]# for PORT in 53 8053 10250 10255 30000-32767; do \
	firewall-cmd --permanent --add-port=${PORT}/tcp --permanent; \
done
[root@nuc ~]# firewall-cmd --reload
[root@nuc ~]# firewall-cmd --list-ports

Disable swapping:

Swapping is not supported by kubelet.

[root@nuc ~]# swapoff -a
[root@nuc ~]# sed -i 's/\(^.*swap.*$\)/\#DISABLE:\1/g' /etc/fstab

Apply this on all the node.

net.bridge.bridge-nf-call-iptables needs to be set to 1

[root@nuc ~]# sysctl net.bridge.bridge-nf-call-iptables=1
net.bridge.bridge-nf-call-iptables = 1

Apply this on all the node.

Bootstrap the cluster

I choose to use flannel as network layer. This means kubeadm needs to know a network CIDR: --pod-network-cidr=10.244.0.0/16

[root@nuc ~]# kubeadm init --pod-network-cidr=10.244.0.0/16
[init] Using Kubernetes version: v1.9.6
[init] Using Authorization modes: [Node RBAC]
[preflight] Running pre-flight checks.
	[WARNING Firewalld]: firewalld is active, please ensure ports [6443 10250] are open or your cluster may not function correctly
	[WARNING FileExisting-crictl]: crictl not found in system path
[preflight] Starting the kubelet service
[certificates] Generated ca certificate and key.
[certificates] Generated apiserver certificate and key.
[certificates] apiserver serving cert is signed for DNS names [nuc.bachstraat20 kubernetes kubernetes.default kubernetes.default.svc kubernetes.default.svc.cluster.local] and IPs [10.96.0.1 192.168.11.100]
[certificates] Generated apiserver-kubelet-client certificate and key.
[certificates] Generated sa key and public key.
[certificates] Generated front-proxy-ca certificate and key.
[certificates] Generated front-proxy-client certificate and key.
[certificates] Valid certificates and keys now exist in "/etc/kubernetes/pki"
[kubeconfig] Wrote KubeConfig file to disk: "admin.conf"
[kubeconfig] Wrote KubeConfig file to disk: "kubelet.conf"
[kubeconfig] Wrote KubeConfig file to disk: "controller-manager.conf"
[kubeconfig] Wrote KubeConfig file to disk: "scheduler.conf"
[controlplane] Wrote Static Pod manifest for component kube-apiserver to "/etc/kubernetes/manifests/kube-apiserver.yaml"
[controlplane] Wrote Static Pod manifest for component kube-controller-manager to "/etc/kubernetes/manifests/kube-controller-manager.yaml"
[controlplane] Wrote Static Pod manifest for component kube-scheduler to "/etc/kubernetes/manifests/kube-scheduler.yaml"
[etcd] Wrote Static Pod manifest for a local etcd instance to "/etc/kubernetes/manifests/etcd.yaml"
[init] Waiting for the kubelet to boot up the control plane as Static Pods from directory "/etc/kubernetes/manifests".
[init] This might take a minute or longer if the control plane images have to be pulled.
[apiclient] All control plane components are healthy after 29.003147 seconds
[uploadconfig] Storing the configuration used in ConfigMap "kubeadm-config" in the "kube-system" Namespace
[markmaster] Will mark node nuc.bachstraat20 as master by adding a label and a taint
[markmaster] Master nuc.bachstraat20 tainted and labelled with key/value: node-role.kubernetes.io/master=""
[bootstraptoken] Using token: 00b963.5761fb79e8d66f42
[bootstraptoken] Configured RBAC rules to allow Node Bootstrap tokens to post CSRs in order for nodes to get long term certificate credentials
[bootstraptoken] Configured RBAC rules to allow the csrapprover controller automatically approve CSRs from a Node Bootstrap Token
[bootstraptoken] Configured RBAC rules to allow certificate rotation for all node client certificates in the cluster
[bootstraptoken] Creating the "cluster-info" ConfigMap in the "kube-public" namespace
[addons] Applied essential addon: kube-dns
[addons] Applied essential addon: kube-proxy

Your Kubernetes master has initialized successfully!

To start using your cluster, you need to run the following as a regular user:

  mkdir -p $HOME/.kube
  sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
  sudo chown $(id -u):$(id -g) $HOME/.kube/config

You should now deploy a pod network to the cluster.
Run "kubectl apply -f [podnetwork].yaml" with one of the options listed at:
  https://kubernetes.io/docs/concepts/cluster-administration/addons/

You can now join any number of machines by running the following on each node
as root:

  kubeadm join --token 00b963.5761fb79e8d66f42 192.168.11.100:6443 --discovery-token-ca-cert-hash sha256:8cbed3f0d2e71762d3c52f03bef702700c2e889827e0e13f403fc463ff58c3ef

Read on, you're not yet there...

Make sure kubectl works

For regular users:

[some-user@nuc ~]# mkdir -p $HOME/.kube
[some-user@nuc ~]# sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config

Alternatively, if you are the root user, you could run this:

[root@nuc ~]# export KUBECONFIG=/etc/kubernetes/admin.conf

Now kubectl works, but the node is NotReady:

[root@nuc ~]# kubectl get nodes
NAME               STATUS     ROLES     AGE       VERSION
nuc.bachstraat20   NotReady   master    1m        v1.9.1

Deploy a pod network

If we check the kubelet.service logging, we notice a network issue.

Apr 01 15:49:41 nuc.bachstraat20 kubelet[26228]: W0401 15:49:41.832172   26228 cni.go:171] Unable to update cni config: No networks found in /etc/cni/net.d
Apr 01 15:49:41 nuc.bachstraat20 kubelet[26228]: E0401 15:49:41.832492   26228 kubelet.go:2105] Container runtime network not ready: NetworkReady=false reason:NetworkPluginNotReady message:docker: network plugin
Apr 01 15:49:46 nuc.bachstraat20 kubelet[26228]: W0401 15:49:46.835857   26228 cni.go:171] Unable to update cni config: No networks found in /etc/cni/net.d
Apr 01 15:49:46 nuc.bachstraat20 kubelet[26228]: E0401 15:49:46.836149   26228 kubelet.go:2105] Container runtime network not ready: NetworkReady=false reason:NetworkPluginNotReady message:docker: network plugin

In order to enable connectivity between pods, we need to deploy the flannel cni plugin:

[root@nuc ~]# kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/v0.9.1/Documentation/kube-flannel.yml
clusterrole "flannel" created
clusterrolebinding "flannel" created
serviceaccount "flannel" created
configmap "kube-flannel-cfg" created
daemonset "kube-flannel-ds" created

[root@nuc ~]# kubectl -n kube-system logs kube-flannel-ds-d9j74 
I0401 15:54:57.978383       1 main.go:474] Determining IP address of default interface
I0401 15:54:57.979471       1 main.go:487] Using interface with name eno1 and address 192.168.11.100
I0401 15:54:57.979515       1 main.go:504] Defaulting external address to interface address (192.168.11.100)
I0401 15:54:58.018470       1 kube.go:130] Waiting 10m0s for node controller to sync
I0401 15:54:58.018585       1 kube.go:283] Starting kube subnet manager
I0401 15:54:59.018704       1 kube.go:137] Node controller sync successful
I0401 15:54:59.018772       1 main.go:234] Created subnet manager: Kubernetes Subnet Manager - nuc.bachstraat20
I0401 15:54:59.018798       1 main.go:237] Installing signal handlers
I0401 15:54:59.019013       1 main.go:352] Found network config - Backend type: vxlan
I0401 15:54:59.019194       1 vxlan.go:119] VXLAN config: VNI=1 Port=0 GBP=false DirectRouting=false
I0401 15:54:59.050793       1 main.go:299] Wrote subnet file to /run/flannel/subnet.env
I0401 15:54:59.050967       1 main.go:303] Running backend.
I0401 15:54:59.051077       1 main.go:321] Waiting for all goroutines to exit
I0401 15:54:59.051192       1 vxlan_network.go:56] watching for new subnet leases
I0401 15:54:59.063168       1 iptables.go:114] Some iptables rules are missing; deleting and recreating rules
I0401 15:54:59.063195       1 iptables.go:136] Deleting iptables rule: -s 10.244.0.0/16 -d 10.244.0.0/16 -j RETURN
I0401 15:54:59.063794       1 iptables.go:114] Some iptables rules are missing; deleting and recreating rules
I0401 15:54:59.063829       1 iptables.go:136] Deleting iptables rule: -s 10.244.0.0/16 -j ACCEPT
I0401 15:54:59.065109       1 iptables.go:136] Deleting iptables rule: -s 10.244.0.0/16 ! -d 224.0.0.0/4 -j MASQUERADE
I0401 15:54:59.066232       1 iptables.go:136] Deleting iptables rule: ! -s 10.244.0.0/16 -d 10.244.0.0/24 -j RETURN
I0401 15:54:59.067421       1 iptables.go:136] Deleting iptables rule: ! -s 10.244.0.0/16 -d 10.244.0.0/16 -j MASQUERADE
I0401 15:54:59.068736       1 iptables.go:124] Adding iptables rule: -s 10.244.0.0/16 -d 10.244.0.0/16 -j RETURN
I0401 15:54:59.071332       1 iptables.go:124] Adding iptables rule: -s 10.244.0.0/16 ! -d 224.0.0.0/4 -j MASQUERADE
I0401 15:54:59.073720       1 iptables.go:124] Adding iptables rule: ! -s 10.244.0.0/16 -d 10.244.0.0/24 -j RETURN
I0401 15:54:59.076483       1 iptables.go:124] Adding iptables rule: ! -s 10.244.0.0/16 -d 10.244.0.0/16 -j MASQUERADE
I0401 15:55:00.066124       1 iptables.go:136] Deleting iptables rule: -d 10.244.0.0/16 -j ACCEPT
I0401 15:55:00.069984       1 iptables.go:124] Adding iptables rule: -s 10.244.0.0/16 -j ACCEPT
I0401 15:55:00.076888       1 iptables.go:124] Adding iptables rule: -d 10.244.0.0/16 -j ACCEPT

[root@nuc ~]# journalctl -u kubelet.service
Apr 01 15:54:55 nuc.bachstraat20 kubelet[26228]: I0401 15:54:55.833848   26228 reconciler.go:217] operationExecutor.VerifyControllerAttachedVolume started for volume "flannel-cfg" (UniqueName: "kubernetes.io/con
Apr 01 15:54:55 nuc.bachstraat20 kubelet[26228]: I0401 15:54:55.833976   26228 reconciler.go:217] operationExecutor.VerifyControllerAttachedVolume started for volume "flannel-token-q9zrd" (UniqueName: "kubernete
Apr 01 15:54:55 nuc.bachstraat20 kubelet[26228]: I0401 15:54:55.834078   26228 reconciler.go:217] operationExecutor.VerifyControllerAttachedVolume started for volume "cni" (UniqueName: "kubernetes.io/host-path/4
Apr 01 15:54:55 nuc.bachstraat20 kubelet[26228]: I0401 15:54:55.834259   26228 reconciler.go:217] operationExecutor.VerifyControllerAttachedVolume started for volume "run" (UniqueName: "kubernetes.io/host-path/4

Now the node reports ready:

[root@nuc ~]# kubectl get nodes
NAME               STATUS    ROLES     AGE       VERSION
nuc.bachstraat20   Ready     master    8m        v1.9.1

Check the node

[root@nuc ~]# kubectl describe nodes
Name:               nuc.bachstraat20
Roles:              master
Labels:             beta.kubernetes.io/arch=amd64
                    beta.kubernetes.io/os=linux
                    kubernetes.io/hostname=nuc.bachstraat20
                    node-role.kubernetes.io/master=
Annotations:        flannel.alpha.coreos.com/backend-data={"VtepMAC":"02:84:03:2e:99:1a"}
                    flannel.alpha.coreos.com/backend-type=vxlan
                    flannel.alpha.coreos.com/kube-subnet-manager=true
                    flannel.alpha.coreos.com/public-ip=192.168.11.100
                    node.alpha.kubernetes.io/ttl=0
                    volumes.kubernetes.io/controller-managed-attach-detach=true
Taints:             node-role.kubernetes.io/master:NoSchedule
CreationTimestamp:  Sun, 01 Apr 2018 15:48:08 +0200
Conditions:
  Type             Status  LastHeartbeatTime                 LastTransitionTime                Reason                       Message
  ----             ------  -----------------                 ------------------                ------                       -------
  OutOfDisk        False   Sun, 01 Apr 2018 15:58:29 +0200   Sun, 01 Apr 2018 15:48:00 +0200   KubeletHasSufficientDisk     kubelet has sufficient disk space available
  MemoryPressure   False   Sun, 01 Apr 2018 15:58:29 +0200   Sun, 01 Apr 2018 15:48:00 +0200   KubeletHasSufficientMemory   kubelet has sufficient memory available
  DiskPressure     False   Sun, 01 Apr 2018 15:58:29 +0200   Sun, 01 Apr 2018 15:48:00 +0200   KubeletHasNoDiskPressure     kubelet has no disk pressure
  Ready            True    Sun, 01 Apr 2018 15:58:29 +0200   Sun, 01 Apr 2018 15:54:59 +0200   KubeletReady                 kubelet is posting ready status
Addresses:
  InternalIP:  192.168.11.100
  Hostname:    nuc.bachstraat20
Capacity:
 cpu:     4
 memory:  16351108Ki
 pods:    110
Allocatable:
 cpu:     4
 memory:  16248708Ki
 pods:    110
System Info:
 Machine ID:                 ccb68e77d17e47e6b23fca3120ef55f4
 System UUID:                E820CB80-34D4-11E1-B35F-C03FD562BB77
 Boot ID:                    f74102a4-1a1f-476b-a9d5-16c36ea8476f
 Kernel Version:             4.15.13-300.fc27.x86_64
 OS Image:                   Fedora 27 (Workstation Edition)
 Operating System:           linux
 Architecture:               amd64
 Container Runtime Version:  docker://1.13.1
 Kubelet Version:            v1.9.1
 Kube-Proxy Version:         v1.9.1
PodCIDR:                     10.244.0.0/24
ExternalID:                  nuc.bachstraat20
Non-terminated Pods:         (7 in total)
  Namespace                  Name                                        CPU Requests  CPU Limits  Memory Requests  Memory Limits
  ---------                  ----                                        ------------  ----------  ---------------  -------------
  kube-system                etcd-nuc.bachstraat20                       0 (0%)        0 (0%)      0 (0%)           0 (0%)
  kube-system                kube-apiserver-nuc.bachstraat20             250m (6%)     0 (0%)      0 (0%)           0 (0%)
  kube-system                kube-controller-manager-nuc.bachstraat20    200m (5%)     0 (0%)      0 (0%)           0 (0%)
  kube-system                kube-dns-6f4fd4bdf-z6z9k                    260m (6%)     0 (0%)      110Mi (0%)       170Mi (1%)
  kube-system                kube-flannel-ds-d9j74                       0 (0%)        0 (0%)      0 (0%)           0 (0%)
  kube-system                kube-proxy-d945n                            0 (0%)        0 (0%)      0 (0%)           0 (0%)
  kube-system                kube-scheduler-nuc.bachstraat20             100m (2%)     0 (0%)      0 (0%)           0 (0%)
Allocated resources:
  (Total limits may be over 100 percent, i.e., overcommitted.)
  CPU Requests  CPU Limits  Memory Requests  Memory Limits
  ------------  ----------  ---------------  -------------
  810m (20%)    0 (0%)      110Mi (0%)       170Mi (1%)
Events:
  Type    Reason                   Age                From                          Message
  ----    ------                   ----               ----                          -------
  Normal  NodeAllocatableEnforced  10m                kubelet, nuc.bachstraat20     Updated Node Allocatable limit across pods
  Normal  NodeHasSufficientDisk    10m (x8 over 10m)  kubelet, nuc.bachstraat20     Node nuc.bachstraat20 status is now: NodeHasSufficientDisk
  Normal  NodeHasSufficientMemory  10m (x8 over 10m)  kubelet, nuc.bachstraat20     Node nuc.bachstraat20 status is now: NodeHasSufficientMemory
  Normal  NodeHasNoDiskPressure    10m (x7 over 10m)  kubelet, nuc.bachstraat20     Node nuc.bachstraat20 status is now: NodeHasNoDiskPressure
  Normal  Starting                 10m                kube-proxy, nuc.bachstraat20  Starting kube-proxy.
  Normal  NodeReady                3m                 kubelet, nuc.bachstraat20     Node nuc.bachstraat20 status is now: NodeReady

The node looks okay, but since it is a master, it reports Taints: node-role.kubernetes.io/master:NoSchedule. So it can't schedule any pods.

Make master node being able to schedule pods

By default, your cluster will not schedule pods on a master node for security reasons. If you want to be able to schedule pods on the master, e.g. for a single-machine Kubernetes cluster for development, run:

[root@nuc ~]# kubectl taint nodes --all node-role.kubernetes.io/master-
node "nuc" untainted
taint key="dedicated" and effect="" not found.
taint key="dedicated" and effect="" not found.

Now the master node is ready to schedule pods:

[root@nuc ~]# kubectl get nodes -o wide
NAME               STATUS    ROLES     AGE       VERSION   EXTERNAL-IP   OS-IMAGE                          KERNEL-VERSION            CONTAINER-RUNTIME
nuc.bachstraat20   Ready     master    17m       v1.9.1    <none>        Fedora 27 (Workstation Edition)   4.15.10-300.fc27.x86_64   docker://1.13.1

The cluster is ready to schedule pods. Continue with deploying the Kubernetes Dashboard...

Install Kubernetes Dashboard

The dashboard itself is a single deployment, but in order to view pod metrics, heapster, influxdb and grafana needs to be deployed too.

InfluxDB

[root@nuc ~]# kubectl create -f https://raw.githubusercontent.com/kubernetes/heapster/master/deploy/kube-config/influxdb/influxdb.yaml                     
deployment "monitoring-influxdb" created 
service "monitoring-influxdb" created  

[root@nuc ~]# kubectl -n kube-system logs monitoring-influxdb-66946c9f58-rw695 
 8888888           .d888 888                   8888888b.  888888b.
   888            d88P"  888                   888  "Y88b 888  "88b
   888            888    888                   888    888 888  .88P
   888   88888b.  888888 888 888  888 888  888 888    888 8888888K.
   888   888 "88b 888    888 888  888  Y8bd8P' 888    888 888  "Y88b
   888   888  888 888    888 888  888   X88K   888    888 888    888
   888   888  888 888    888 Y88b 888 .d8""8b. 888  .d88P 888   d88P
 8888888 888  888 888    888  "Y88888 888  888 8888888P"  8888888P"
[I] 2018-04-01T16:00:28Z InfluxDB starting, version unknown, branch unknown, commit unknown
[I] 2018-04-01T16:00:28Z Go version go1.8.3, GOMAXPROCS set to 4
[I] 2018-04-01T16:00:28Z Using configuration at: /etc/config.toml
[I] 2018-04-01T16:00:38Z Using data dir: /data/data service=store
[I] 2018-04-01T16:00:38Z opened service service=subscriber
[I] 2018-04-01T16:00:38Z Starting monitor system service=monitor
[I] 2018-04-01T16:00:38Z 'build' registered for diagnostics monitoring service=monitor
[I] 2018-04-01T16:00:38Z 'runtime' registered for diagnostics monitoring service=monitor
[I] 2018-04-01T16:00:38Z 'network' registered for diagnostics monitoring service=monitor
[I] 2018-04-01T16:00:38Z 'system' registered for diagnostics monitoring service=monitor
[I] 2018-04-01T16:00:38Z Starting precreation service with check interval of 10m0s, advance period of 30m0s service=shard-precreation
[I] 2018-04-01T16:00:38Z Starting snapshot service service=snapshot
[I] 2018-04-01T16:00:38Z Starting continuous query service service=continuous_querier
[I] 2018-04-01T16:00:38Z Starting HTTP service service=httpd
[I] 2018-04-01T16:00:38Z Authentication enabled:false service=httpd
[I] 2018-04-01T16:00:38Z Listening on HTTP:[::]:8086 service=httpd
[I] 2018-04-01T16:00:38Z Starting retention policy enforcement service with check interval of 30m0s service=retention
[I] 2018-04-01T16:00:38Z Listening for signals
[I] 2018-04-01T16:00:38Z Storing statistics in database '_internal' retention policy 'monitor', at interval 10s service=monitor

Grafana

[root@nuc ~]# kubectl create -f https://raw.githubusercontent.com/kubernetes/heapster/master/deploy/kube-config/influxdb/grafana.yaml
deployment "monitoring-grafana" created
service "monitoring-grafana" created

[root@nuc ~]# kubectl -n kube-system logs monitoring-grafana-65757b9656-c2b6r 
Starting a utility program that will configure Grafana
Starting Grafana in foreground mode
t=2018-04-01T16:02:35+0000 lvl=info msg="Starting Grafana" logger=main version=v4.4.3 commit=unknown-dev compiled=2018-04-01T16:02:35+0000
t=2018-04-01T16:02:35+0000 lvl=info msg="Config loaded from" logger=settings file=/usr/share/grafana/conf/defaults.ini
t=2018-04-01T16:02:35+0000 lvl=info msg="Config loaded from" logger=settings file=/etc/grafana/grafana.ini
t=2018-04-01T16:02:35+0000 lvl=info msg="Config overridden from command line" logger=settings arg="default.paths.data=/var/lib/grafana"
t=2018-04-01T16:02:35+0000 lvl=info msg="Config overridden from command line" logger=settings arg="default.paths.logs=/var/log/grafana"
t=2018-04-01T16:02:35+0000 lvl=info msg="Config overridden from command line" logger=settings arg="default.log.mode=console"
t=2018-04-01T16:02:35+0000 lvl=info msg="Config overridden from Environment variable" logger=settings var="GF_SERVER_PROTOCOL=http"
t=2018-04-01T16:02:35+0000 lvl=info msg="Config overridden from Environment variable" logger=settings var="GF_SERVER_HTTP_PORT=3000"
t=2018-04-01T16:02:35+0000 lvl=info msg="Config overridden from Environment variable" logger=settings var="GF_SERVER_ROOT_URL=/"
t=2018-04-01T16:02:35+0000 lvl=info msg="Config overridden from Environment variable" logger=settings var="GF_AUTH_ANONYMOUS_ENABLED=true"
t=2018-04-01T16:02:35+0000 lvl=info msg="Config overridden from Environment variable" logger=settings var="GF_AUTH_ANONYMOUS_ORG_ROLE=Admin"
t=2018-04-01T16:02:35+0000 lvl=info msg="Config overridden from Environment variable" logger=settings var="GF_AUTH_BASIC_ENABLED=false"
t=2018-04-01T16:02:35+0000 lvl=info msg="Path Home" logger=settings path=/usr/share/grafana
t=2018-04-01T16:02:35+0000 lvl=info msg="Path Data" logger=settings path=/var/lib/grafana
t=2018-04-01T16:02:35+0000 lvl=info msg="Path Logs" logger=settings path=/var/log/grafana
t=2018-04-01T16:02:35+0000 lvl=info msg="Path Plugins" logger=settings path=/usr/share/grafana/data/plugins
t=2018-04-01T16:02:35+0000 lvl=info msg="Initializing DB" logger=sqlstore dbtype=sqlite3
t=2018-04-01T16:02:35+0000 lvl=info msg="Starting DB migration" logger=migrator
t=2018-04-01T16:02:35+0000 lvl=info msg="Executing migration" logger=migrator id="create migration_log table"
t=2018-04-01T16:02:35+0000 lvl=info msg="Executing migration" logger=migrator id="create user table"
t=2018-04-01T16:02:35+0000 lvl=info msg="Executing migration" logger=migrator id="add unique index user.login"
t=2018-04-01T16:02:35+0000 lvl=info msg="Executing migration" logger=migrator id="add unique index user.email"
t=2018-04-01T16:02:35+0000 lvl=info msg="Executing migration" logger=migrator id="drop index UQE_user_login - v1"
t=2018-04-01T16:02:35+0000 lvl=info msg="Executing migration" logger=migrator id="drop index UQE_user_email - v1"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="Rename table user to user_v1 - v1"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="create user table v2"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="create index UQE_user_login - v2"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="create index UQE_user_email - v2"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="copy data_source v1 to v2"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="Drop old table user_v1"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="Add column help_flags1 to user table"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="Update user table charset"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="create temp user table v1-7"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="create index IDX_temp_user_email - v1-7"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="create index IDX_temp_user_org_id - v1-7"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="create index IDX_temp_user_code - v1-7"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="create index IDX_temp_user_status - v1-7"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="Update temp_user table charset"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="create star table"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="add unique index star.user_id_dashboard_id"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="create org table v1"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="create index UQE_org_name - v1"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="create org_user table v1"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="create index IDX_org_user_org_id - v1"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="create index UQE_org_user_org_id_user_id - v1"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="copy data account to org"
t=2018-04-01T16:02:36+0000 lvl=info msg="Skipping migration condition not fulfilled" logger=migrator id="copy data account to org"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="copy data account_user to org_user"
t=2018-04-01T16:02:36+0000 lvl=info msg="Skipping migration condition not fulfilled" logger=migrator id="copy data account_user to org_user"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="Drop old table account"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="Drop old table account_user"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="Update org table charset"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="Update org_user table charset"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="create dashboard table"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="add index dashboard.account_id"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="add unique index dashboard_account_id_slug"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="create dashboard_tag table"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="add unique index dashboard_tag.dasboard_id_term"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="drop index UQE_dashboard_tag_dashboard_id_term - v1"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="Rename table dashboard to dashboard_v1 - v1"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="create dashboard v2"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="create index IDX_dashboard_org_id - v2"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="create index UQE_dashboard_org_id_slug - v2"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="copy dashboard v1 to v2"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="drop table dashboard_v1"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="alter dashboard.data to mediumtext v1"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="Add column updated_by in dashboard - v2"
t=2018-04-01T16:02:36+0000 lvl=info msg="Executing migration" logger=migrator id="Add column created_by in dashboard - v2"
t=2018-04-01T16:02:37+0000 lvl=info msg="Executing migration" logger=migrator id="Add column gnetId in dashboard"
t=2018-04-01T16:02:37+0000 lvl=info msg="Executing migration" logger=migrator id="Add index for gnetId in dashboard"
t=2018-04-01T16:02:37+0000 lvl=info msg="Executing migration" logger=migrator id="Add column plugin_id in dashboard"
t=2018-04-01T16:02:37+0000 lvl=info msg="Executing migration" logger=migrator id="Add index for plugin_id in dashboard"
t=2018-04-01T16:02:37+0000 lvl=info msg="Executing migration" logger=migrator id="Add index for dashboard_id in dashboard_tag"
t=2018-04-01T16:02:37+0000 lvl=info msg="Executing migration" logger=migrator id="Update dashboard table charset"
t=2018-04-01T16:02:37+0000 lvl=info msg="Executing migration" logger=migrator id="Update dashboard_tag table charset"
t=2018-04-01T16:02:37+0000 lvl=info msg="Executing migration" logger=migrator id="create data_source table"
t=2018-04-01T16:02:37+0000 lvl=info msg="Executing migration" logger=migrator id="add index data_source.account_id"
t=2018-04-01T16:02:37+0000 lvl=info msg="Executing migration" logger=migrator id="add unique index data_source.account_id_name"
t=2018-04-01T16:02:37+0000 lvl=info msg="Executing migration" logger=migrator id="drop index IDX_data_source_account_id - v1"
t=2018-04-01T16:02:37+0000 lvl=info msg="Executing migration" logger=migrator id="drop index UQE_data_source_account_id_name - v1"
t=2018-04-01T16:02:37+0000 lvl=info msg="Executing migration" logger=migrator id="Rename table data_source to data_source_v1 - v1"
t=2018-04-01T16:02:37+0000 lvl=info msg="Executing migration" logger=migrator id="create data_source table v2"
t=2018-04-01T16:02:37+0000 lvl=info msg="Executing migration" logger=migrator id="create index IDX_data_source_org_id - v2"
t=2018-04-01T16:02:37+0000 lvl=info msg="Executing migration" logger=migrator id="create index UQE_data_source_org_id_name - v2"
t=2018-04-01T16:02:37+0000 lvl=info msg="Executing migration" logger=migrator id="copy data_source v1 to v2"
t=2018-04-01T16:02:37+0000 lvl=info msg="Executing migration" logger=migrator id="Drop old table data_source_v1 #2"
t=2018-04-01T16:02:37+0000 lvl=info msg="Executing migration" logger=migrator id="Add column with_credentials"
t=2018-04-01T16:02:37+0000 lvl=info msg="Executing migration" logger=migrator id="Add secure json data column"
t=2018-04-01T16:02:37+0000 lvl=info msg="Executing migration" logger=migrator id="Update data_source table charset"
t=2018-04-01T16:02:37+0000 lvl=info msg="Executing migration" logger=migrator id="create api_key table"
t=2018-04-01T16:02:37+0000 lvl=info msg="Executing migration" logger=migrator id="add index api_key.account_id"
t=2018-04-01T16:02:37+0000 lvl=info msg="Executing migration" logger=migrator id="add index api_key.key"
t=2018-04-01T16:02:37+0000 lvl=info msg="Executing migration" logger=migrator id="add index api_key.account_id_name"
t=2018-04-01T16:02:37+0000 lvl=info msg="Executing migration" logger=migrator id="drop index IDX_api_key_account_id - v1"
t=2018-04-01T16:02:37+0000 lvl=info msg="Executing migration" logger=migrator id="drop index UQE_api_key_key - v1"
t=2018-04-01T16:02:37+0000 lvl=info msg="Executing migration" logger=migrator id="drop index UQE_api_key_account_id_name - v1"
t=2018-04-01T16:02:37+0000 lvl=info msg="Executing migration" logger=migrator id="Rename table api_key to api_key_v1 - v1"
t=2018-04-01T16:02:37+0000 lvl=info msg="Executing migration" logger=migrator id="create api_key table v2"
t=2018-04-01T16:02:37+0000 lvl=info msg="Executing migration" logger=migrator id="create index IDX_api_key_org_id - v2"
t=2018-04-01T16:02:37+0000 lvl=info msg="Executing migration" logger=migrator id="create index UQE_api_key_key - v2"
t=2018-04-01T16:02:37+0000 lvl=info msg="Executing migration" logger=migrator id="create index UQE_api_key_org_id_name - v2"
t=2018-04-01T16:02:37+0000 lvl=info msg="Executing migration" logger=migrator id="copy api_key v1 to v2"
t=2018-04-01T16:02:37+0000 lvl=info msg="Executing migration" logger=migrator id="Drop old table api_key_v1"
t=2018-04-01T16:02:37+0000 lvl=info msg="Executing migration" logger=migrator id="Update api_key table charset"
t=2018-04-01T16:02:37+0000 lvl=info msg="Executing migration" logger=migrator id="create dashboard_snapshot table v4"
t=2018-04-01T16:02:37+0000 lvl=info msg="Executing migration" logger=migrator id="drop table dashboard_snapshot_v4 #1"
t=2018-04-01T16:02:37+0000 lvl=info msg="Executing migration" logger=migrator id="create dashboard_snapshot table v5 #2"
t=2018-04-01T16:02:38+0000 lvl=info msg="Executing migration" logger=migrator id="create index UQE_dashboard_snapshot_key - v5"
t=2018-04-01T16:02:38+0000 lvl=info msg="Executing migration" logger=migrator id="create index UQE_dashboard_snapshot_delete_key - v5"
t=2018-04-01T16:02:38+0000 lvl=info msg="Executing migration" logger=migrator id="create index IDX_dashboard_snapshot_user_id - v5"
t=2018-04-01T16:02:38+0000 lvl=info msg="Executing migration" logger=migrator id="alter dashboard_snapshot to mediumtext v2"
t=2018-04-01T16:02:38+0000 lvl=info msg="Executing migration" logger=migrator id="Update dashboard_snapshot table charset"
t=2018-04-01T16:02:38+0000 lvl=info msg="Executing migration" logger=migrator id="create quota table v1"
t=2018-04-01T16:02:38+0000 lvl=info msg="Executing migration" logger=migrator id="create index UQE_quota_org_id_user_id_target - v1"
t=2018-04-01T16:02:38+0000 lvl=info msg="Executing migration" logger=migrator id="Update quota table charset"
t=2018-04-01T16:02:38+0000 lvl=info msg="Executing migration" logger=migrator id="create plugin_setting table"
t=2018-04-01T16:02:38+0000 lvl=info msg="Executing migration" logger=migrator id="create index UQE_plugin_setting_org_id_plugin_id - v1"
t=2018-04-01T16:02:38+0000 lvl=info msg="Executing migration" logger=migrator id="Add column plugin_version to plugin_settings"
t=2018-04-01T16:02:38+0000 lvl=info msg="Executing migration" logger=migrator id="Update plugin_setting table charset"
t=2018-04-01T16:02:38+0000 lvl=info msg="Executing migration" logger=migrator id="create session table"
t=2018-04-01T16:02:38+0000 lvl=info msg="Executing migration" logger=migrator id="Drop old table playlist table"
t=2018-04-01T16:02:38+0000 lvl=info msg="Executing migration" logger=migrator id="Drop old table playlist_item table"
t=2018-04-01T16:02:38+0000 lvl=info msg="Executing migration" logger=migrator id="create playlist table v2"
t=2018-04-01T16:02:38+0000 lvl=info msg="Executing migration" logger=migrator id="create playlist item table v2"
t=2018-04-01T16:02:38+0000 lvl=info msg="Executing migration" logger=migrator id="Update playlist table charset"
t=2018-04-01T16:02:38+0000 lvl=info msg="Executing migration" logger=migrator id="Update playlist_item table charset"
t=2018-04-01T16:02:38+0000 lvl=info msg="Executing migration" logger=migrator id="drop preferences table v2"
t=2018-04-01T16:02:38+0000 lvl=info msg="Executing migration" logger=migrator id="drop preferences table v3"
t=2018-04-01T16:02:38+0000 lvl=info msg="Executing migration" logger=migrator id="create preferences table v3"
t=2018-04-01T16:02:38+0000 lvl=info msg="Executing migration" logger=migrator id="Update preferences table charset"
t=2018-04-01T16:02:38+0000 lvl=info msg="Executing migration" logger=migrator id="create alert table v1"
t=2018-04-01T16:02:38+0000 lvl=info msg="Executing migration" logger=migrator id="add index alert org_id & id "
t=2018-04-01T16:02:38+0000 lvl=info msg="Executing migration" logger=migrator id="add index alert state"
t=2018-04-01T16:02:38+0000 lvl=info msg="Executing migration" logger=migrator id="add index alert dashboard_id"
t=2018-04-01T16:02:38+0000 lvl=info msg="Executing migration" logger=migrator id="create alert_notification table v1"
t=2018-04-01T16:02:38+0000 lvl=info msg="Executing migration" logger=migrator id="Add column is_default"
t=2018-04-01T16:02:38+0000 lvl=info msg="Executing migration" logger=migrator id="add index alert_notification org_id & name"
t=2018-04-01T16:02:38+0000 lvl=info msg="Executing migration" logger=migrator id="Update alert table charset"
t=2018-04-01T16:02:38+0000 lvl=info msg="Executing migration" logger=migrator id="Update alert_notification table charset"
t=2018-04-01T16:02:38+0000 lvl=info msg="Executing migration" logger=migrator id="Drop old annotation table v4"
t=2018-04-01T16:02:38+0000 lvl=info msg="Executing migration" logger=migrator id="create annotation table v5"
t=2018-04-01T16:02:38+0000 lvl=info msg="Executing migration" logger=migrator id="add index annotation 0 v3"
t=2018-04-01T16:02:38+0000 lvl=info msg="Executing migration" logger=migrator id="add index annotation 1 v3"
t=2018-04-01T16:02:38+0000 lvl=info msg="Executing migration" logger=migrator id="add index annotation 2 v3"
t=2018-04-01T16:02:38+0000 lvl=info msg="Executing migration" logger=migrator id="add index annotation 3 v3"
t=2018-04-01T16:02:38+0000 lvl=info msg="Executing migration" logger=migrator id="add index annotation 4 v3"
t=2018-04-01T16:02:38+0000 lvl=info msg="Executing migration" logger=migrator id="Update annotation table charset"
t=2018-04-01T16:02:39+0000 lvl=info msg="Executing migration" logger=migrator id="Add column region_id to annotation table"
t=2018-04-01T16:02:39+0000 lvl=info msg="Executing migration" logger=migrator id="create test_data table"
t=2018-04-01T16:02:39+0000 lvl=info msg="Executing migration" logger=migrator id="create dashboard_version table v1"
t=2018-04-01T16:02:39+0000 lvl=info msg="Executing migration" logger=migrator id="add index dashboard_version.dashboard_id"
t=2018-04-01T16:02:39+0000 lvl=info msg="Executing migration" logger=migrator id="add unique index dashboard_version.dashboard_id and dashboard_version.version"
t=2018-04-01T16:02:39+0000 lvl=info msg="Executing migration" logger=migrator id="Set dashboard version to 1 where 0"
t=2018-04-01T16:02:39+0000 lvl=info msg="Executing migration" logger=migrator id="save existing dashboard data in dashboard_version table v1"
t=2018-04-01T16:02:39+0000 lvl=info msg="Executing migration" logger=migrator id="alter dashboard_version.data to mediumtext v1"
t=2018-04-01T16:02:39+0000 lvl=info msg="Created default admin user: admin"
t=2018-04-01T16:02:39+0000 lvl=info msg="Starting plugin search" logger=plugins
t=2018-04-01T16:02:39+0000 lvl=warn msg="Plugin dir does not exist" logger=plugins dir=/usr/share/grafana/data/plugins
t=2018-04-01T16:02:39+0000 lvl=info msg="Plugin dir created" logger=plugins dir=/usr/share/grafana/data/plugins
t=2018-04-01T16:02:39+0000 lvl=info msg="Initializing Alerting" logger=alerting.engine
t=2018-04-01T16:02:39+0000 lvl=info msg="Initializing CleanUpService" logger=cleanup
t=2018-04-01T16:02:39+0000 lvl=info msg="Initializing Stream Manager"
t=2018-04-01T16:02:39+0000 lvl=info msg="Initializing HTTP Server" logger=http.server address=0.0.0.0:3000 protocol=http subUrl= socket=
Connected to the Grafana dashboard.
The datasource for the Grafana dashboard is now set.

Heapster

[root@nuc ~]# kubectl create -f https://raw.githubusercontent.com/kubernetes/heapster/master/deploy/kube-config/influxdb/heapster.yaml
serviceaccount "heapster" created
deployment "heapster" created
service "heapster" created

[root@nuc ~]# kubectl -n kube-system logs heapster-5c448886d-ssw4f 
I0401 16:04:48.659393       1 heapster.go:72] /heapster --source=kubernetes:https://kubernetes.default --sink=influxdb:http://monitoring-influxdb.kube-system.svc:8086
I0401 16:04:48.659440       1 heapster.go:73] Heapster version v1.4.2
I0401 16:04:48.659642       1 configs.go:61] Using Kubernetes client with master "https://kubernetes.default" and version v1
I0401 16:04:48.659664       1 configs.go:62] Using kubelet port 10255
I0401 16:04:48.672479       1 influxdb.go:278] created influxdb sink with options: host:monitoring-influxdb.kube-system.svc:8086 user:root db:k8s
I0401 16:04:48.672511       1 heapster.go:196] Starting with InfluxDB Sink
I0401 16:04:48.672515       1 heapster.go:196] Starting with Metric Sink
I0401 16:04:48.684241       1 heapster.go:106] Starting heapster on port 8082
I0401 16:04:05.112135       1 influxdb.go:241] Created database "k8s" on influxDB server at "monitoring-influxdb.kube-system.svc:8086"

Heapster RBAC

[root@nuc ~]# kubectl apply -f https://raw.githubusercontent.com/kubernetes/heapster/master/deploy/kube-config/rbac/heapster-rbac.yaml
clusterrolebinding "heapster" created

Kubernetes dashboard

[root@nuc ~]# kubectl apply -f https://raw.githubusercontent.com/kubernetes/dashboard/master/src/deploy/recommended/kubernetes-dashboard.yaml
secret "kubernetes-dashboard-certs" created
serviceaccount "kubernetes-dashboard" created
role "kubernetes-dashboard-minimal" created
rolebinding "kubernetes-dashboard-minimal" created
deployment "kubernetes-dashboard" created
service "kubernetes-dashboard" created

[root@nuc ~]# kubectl -n kube-system logs kubernetes-dashboard-5bd6f767c7-xzcq4 
2018/04/01 16:07:26 Starting overwatch
2018/04/01 16:07:26 Using in-cluster config to connect to apiserver
2018/04/01 16:07:26 Using service account token for csrf signing
2018/04/01 16:07:26 No request provided. Skipping authorization
2018/04/01 16:07:26 Successful initial request to the apiserver, version: v1.9.6
2018/04/01 16:07:26 Generating JWE encryption key
2018/04/01 16:07:26 New synchronizer has been registered: kubernetes-dashboard-key-holder-kube-system. Starting
2018/04/01 16:07:26 Starting secret synchronizer for kubernetes-dashboard-key-holder in namespace kube-system
2018/04/01 16:07:26 Storing encryption key in a secret
2018/04/01 16:07:26 Creating in-cluster Heapster client
2018/04/01 16:07:26 Successful request to heapster
2018/04/01 16:07:26 Auto-generating certificates
2018/04/01 16:07:26 Successfully created certificates
2018/04/01 16:07:26 Serving securely on HTTPS port: 8443

To make the dashboard accessible via a node-port change the type in the kubernetes-dashboard service. Change type: ClusterIP to type: NodePort and save it:

[root@nuc ~]#  kubectl -n kube-system edit service kubernetes-dashboard
service "kubernetes-dashboard" edited

[root@nuc ~]# kubectl get service -n kube-system
NAME                   TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)         AGE
heapster               ClusterIP   10.101.132.149   <none>        80/TCP          8m
kube-dns               ClusterIP   10.96.0.10       <none>        53/UDP,53/TCP   25m
kubernetes-dashboard   NodePort    10.100.227.126   <none>        443:30120/TCP   5m
monitoring-grafana     ClusterIP   10.102.178.122   <none>        80/TCP          10m
monitoring-influxdb    ClusterIP   10.103.66.221    <none>        8086/TCP        12m

So in this case the Dashboard is exposed on port 30120 (HTTPS).

Get Node(s) name and IP

All services running on the cluster that are exposed via a node-port are exposed on all nodes that run kube-proxy.
So if you want to connect to a service you need to know a node ip's or node names:

[root@nuc ~]# kubectl get pods -n kube-system -o wide | grep kube-proxy | awk '{print $6 "   " $7}'
192.168.11.100   nuc.bachstraat20

Access the kubernetes dashboard

The dashboard is now accessible from a web browser via a node-name or node-ip and its port: https://NODE-IP:30120
Continue below to create credentieels to login to the kubernetes-dashboard.

Clone this repo

For some of the following steps you need some manifest files form this repo. Therefor it is useful to clone this repo on your Kubernetes master node (or the node where you run kubectl):

[root@nuc ~]# git clone https://github.com/tedsluis/kubernetes-via-kubeadm.git

[root@nuc ~]# cd kubernetes-via-kubeadm

Create an admin user

To create a cluster-admin user, use these files: admin-user.yaml and admin-user-clusterrolebinding.yaml:

[root@nuc kubernetes-via-kubeadm]# kubectl create -f admin-user.yaml -n kube-system
serviceaccount "admin-user" created
[root@nuc kubernetes-via-kubeadm]# kubectl create -f admin-user-clusterrolebinding.yaml
clusterrolebinding "admin-user" created

To get the token for this admin-user:

[root@nuc kubernetes-via-kubeadm]# kubectl -n kube-system describe secret $(kubectl -n kube-system get secret | grep admin-user | awk '{print $1}') | grep ^token: | sed 's/token:[ ]*//'
eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJrdWJlcm5ldGVzL3NlcnZpY2VhY2NvdW50Iiwia3ViZXJuZXRlcy5pby9zZXJ2aWNlYWNjb3VudC9uYW1lc3BhY2UiOiJrdWJlLXN5c3RlbSIsImt1YmVybmV0ZXMuaW8vc2VydmljZWFjY291bnQvc2VjcmV0Lm5hbWUiOiJhZG1pbi11c2VyLXRva2VuLW1oNzIyIiwia3ViZXJuZXRlcy5pby9zZXJ2aWNlYWNjb3VudC9zZXJ2aWNlLWFjY291bnQubmFtZSI6ImFkbWluLXVzZXIiLCJrdWJlcm5ldGVzLmlvL3NlcnZpY2VhY2NvdW50L3NlcnZpY2UtYWNjb3VudC51aWQiOiIwNWM0ZDZmZC0yZjYyLTExZTgtYTMxNi1jMDNmZDU2MmJiNzciLCJzdWIiOiJzeXN0ZW06c2VydmljZWFjY291bnQ6a3ViZS1zeXN0ZW06YWRtaW4tdXNlciJ9.butKxegADx3JQvKpn9Prf7RL_SoxaEyi_scYOvXurm4BAwEj8zfC9a7djqQ9mBtd5cQHlljvMb-3qFc6UPOzAwR8fc5khk-nAkH-5XeahpT8WsyxMcKxqLuyAg8gh4ZtMKvBPk9kOWDtyRBzAeGkisbLxr43ecKO71F5G8D7HR2UGSm-x4Pvhq0uqj8GyIcHw902Ti92BPuBRf-SyTl8uDCQJSDkS5Tru5w0p82borNuVXd1mmDwuI87ApQrqXTY9rbJ61m8iTr0kKJBqw5bHAUAhxwAVtVEKQNNKT6cxWp1FlhHbNkM9bhcj1qj8bN1QCMjPWlWKj7NkPbbBAJthQ

Login to the Kubernetes Dashboard

You can use the token to login to the kubernetes-dashboard, https://NODE-IP:30120

Screenshots

Deploying Prometheus

Scrape jobs

Prometheus scrapes metrics from various end-points. One of the end-point is node-exporter, which also needs to be deployed.
The following scrape jobs are configured:

Scrape job	End-point
kubernetes-apiservers	https://API-NODE:6443/metrics
kubernetes-nodes	http://NODE-IP:10255/metrics
kubernetes-cadvisor	http://NODE-IP:4194/metrics
node-exporters	http://NODE-IP:9100/metrics

Of cource you can add more scrape jobs to scrape for e.g. application end-points.

Create namespace, serviceaccount and clusterrolebinding for Prometheus

[root@nuc kubernetes-via-kubeadm]# kubectl create namespace prometheus
namespace "prometheus" created

[root@nuc kubernetes-via-kubeadm]# kubectl -n prometheus create -f prometheus-sa.yaml 
serviceaccount "prometheus" created

[root@nuc kubernetes-via-kubeadm]# kubectl -n prometheus create -f prometheus-sa-clusterrolebinding.yaml
clusterrolebinding "prometheus" created

Create configmap for Prometheus config file

[root@nuc kubernetes-via-kubeadm]# kubectl create -f prometheus-config.yaml -n prometheus
configmap "prometheus-config" created

Deploy Prometheus

Now you're ready to deploy Prometheus and its service:

[root@nuc kubernetes-via-kubeadm]# kubectl create -f prometheus-deployment.yaml -n prometheus
deployment "prometheus" created

[root@nuc kubernetes-via-kubeadm]# kubectl -n prometheus logs prometheus-548c6968df-7tmfx 
level=info ts=2018-04-01T16:11:15.924813688Z caller=main.go:220 msg="Starting Prometheus" version="(version=2.2.1, branch=HEAD, revision=bc6058c81272a8d938c05e75607371284236aadc)"
level=info ts=2018-04-01T16:11:15.924910338Z caller=main.go:221 build_context="(go=go1.10, user=root@149e5b3f0829, date=20180314-14:15:45)"
level=info ts=2018-04-01T16:11:15.924956501Z caller=main.go:222 host_details="(Linux 4.15.13-300.fc27.x86_64 #1 SMP Mon Mar 26 19:06:57 UTC 2018 x86_64 prometheus-548c6968df-7tmfx (none))"
level=info ts=2018-04-01T16:11:15.925007235Z caller=main.go:223 fd_limits="(soft=1048576, hard=1048576)"
level=info ts=2018-04-01T16:11:15.929083647Z caller=web.go:382 component=web msg="Start listening for connections" address=0.0.0.0:9090
level=info ts=2018-04-01T16:11:15.929007066Z caller=main.go:504 msg="Starting TSDB ..."
level=info ts=2018-04-01T16:11:15.935954091Z caller=main.go:514 msg="TSDB started"
level=info ts=2018-04-01T16:11:15.936002475Z caller=main.go:588 msg="Loading configuration file" filename=/var/lib/prometheus/config/prometheus-config.yaml
level=info ts=2018-04-01T16:11:15.938092113Z caller=kubernetes.go:191 component="discovery manager scrape" discovery=k8s msg="Using pod service account via in-cluster config"
level=info ts=2018-04-01T16:11:15.940710905Z caller=kubernetes.go:191 component="discovery manager scrape" discovery=k8s msg="Using pod service account via in-cluster config"
level=info ts=2018-04-01T16:11:15.941944098Z caller=kubernetes.go:191 component="discovery manager scrape" discovery=k8s msg="Using pod service account via in-cluster config"
level=info ts=2018-04-01T16:11:15.943166979Z caller=kubernetes.go:191 component="discovery manager scrape" discovery=k8s msg="Using pod service account via in-cluster config"
level=info ts=2018-04-01T16:11:15.944743655Z caller=kubernetes.go:191 component="discovery manager scrape" discovery=k8s msg="Using pod service account via in-cluster config"
level=info ts=2018-04-01T16:11:15.94622556Z caller=kubernetes.go:191 component="discovery manager scrape" discovery=k8s msg="Using pod service account via in-cluster config"
level=info ts=2018-04-01T16:11:15.947592433Z caller=kubernetes.go:191 component="discovery manager scrape" discovery=k8s msg="Using pod service account via in-cluster config"
level=info ts=2018-04-01T16:11:15.948887143Z caller=kubernetes.go:191 component="discovery manager scrape" discovery=k8s msg="Using pod service account via in-cluster config"
level=info ts=2018-04-01T16:11:15.950194674Z caller=main.go:491 msg="Server is ready to receive web requests."

[root@nuc kubernetes-via-kubeadm]# kubectl -n prometheus create -f prometheus-service.yaml 
service "prometheus" created

Change the Prometheus config

If you later on want to make changes to Prometheus, just edit this configmap:

[root@nuc kubernetes-via-kubeadm]# kubectl -n prometheus edit configmap prometheus-config

Changes will be active after you restart Prometheus (just delete the pod).

Deploy node-exporter

Now you can deploy node-exporter and its service:

[root@nuc kubernetes-via-kubeadm]# kubectl -n prometheus create -f node-exporter-deployment.yaml

[root@nuc kubernetes-via-kubeadm]# kubectl -n prometheus logs node-exporter-w8spt 
time="2018-04-01T16:14:54Z" level=info msg="Starting node_exporter (version=0.15.2, branch=HEAD, revision=98bc64930d34878b84a0f87dfe6e1a6da61e532d)" source="node_exporter.go:43"
time="2018-04-01T16:14:54Z" level=info msg="Build context (go=go1.9.2, user=root@d5c4792c921f, date=20171205-14:50:53)" source="node_exporter.go:44"
time="2018-04-01T16:14:54Z" level=info msg="No directory specified, see --collector.textfile.directory" source="textfile.go:57"
time="2018-04-01T16:14:54Z" level=info msg="Enabled collectors:" source="node_exporter.go:50"
time="2018-04-01T16:14:54Z" level=info msg=" - filesystem" source="node_exporter.go:52"
time="2018-04-01T16:14:54Z" level=info msg=" - zfs" source="node_exporter.go:52"
time="2018-04-01T16:14:54Z" level=info msg=" - hwmon" source="node_exporter.go:52"
time="2018-04-01T16:14:54Z" level=info msg=" - edac" source="node_exporter.go:52"
time="2018-04-01T16:14:54Z" level=info msg=" - vmstat" source="node_exporter.go:52"
time="2018-04-01T16:14:54Z" level=info msg=" - uname" source="node_exporter.go:52"
time="2018-04-01T16:14:54Z" level=info msg=" - time" source="node_exporter.go:52"
time="2018-04-01T16:14:54Z" level=info msg=" - timex" source="node_exporter.go:52"
time="2018-04-01T16:14:54Z" level=info msg=" - textfile" source="node_exporter.go:52"
time="2018-04-01T16:14:54Z" level=info msg=" - conntrack" source="node_exporter.go:52"
time="2018-04-01T16:14:54Z" level=info msg=" - loadavg" source="node_exporter.go:52"
time="2018-04-01T16:14:54Z" level=info msg=" - arp" source="node_exporter.go:52"
time="2018-04-01T16:14:54Z" level=info msg=" - mdadm" source="node_exporter.go:52"
time="2018-04-01T16:14:54Z" level=info msg=" - bcache" source="node_exporter.go:52"
time="2018-04-01T16:14:54Z" level=info msg=" - entropy" source="node_exporter.go:52"
time="2018-04-01T16:14:54Z" level=info msg=" - netdev" source="node_exporter.go:52"
time="2018-04-01T16:14:54Z" level=info msg=" - ipvs" source="node_exporter.go:52"
time="2018-04-01T16:14:54Z" level=info msg=" - meminfo" source="node_exporter.go:52"
time="2018-04-01T16:14:54Z" level=info msg=" - netstat" source="node_exporter.go:52"
time="2018-04-01T16:14:54Z" level=info msg=" - wifi" source="node_exporter.go:52"
time="2018-04-01T16:14:54Z" level=info msg=" - cpu" source="node_exporter.go:52"
time="2018-04-01T16:14:54Z" level=info msg=" - sockstat" source="node_exporter.go:52"
time="2018-04-01T16:14:54Z" level=info msg=" - xfs" source="node_exporter.go:52"
time="2018-04-01T16:14:54Z" level=info msg=" - diskstats" source="node_exporter.go:52"
time="2018-04-01T16:14:54Z" level=info msg=" - filefd" source="node_exporter.go:52"
time="2018-04-01T16:14:54Z" level=info msg=" - infiniband" source="node_exporter.go:52"
time="2018-04-01T16:14:54Z" level=info msg=" - stat" source="node_exporter.go:52"
time="2018-04-01T16:14:54Z" level=info msg="Listening on :9100" source="node_exporter.go:76"

[root@nuc kubernetes-via-kubeadm]# kubectl -n prometheus create -f node-exporter-service.yaml 
service "node-exporter" created

Check the Prometheus and node-exporter services

[root@nuc kubernetes-via-kubeadm]# kubectl -n prometheus get services
NAME            TYPE       CLUSTER-IP       EXTERNAL-IP   PORT(S)          AGE
node-exporter   NodePort   10.105.153.131   <none>        9100:30001/TCP   41m
prometheus      NodePort   10.96.154.129    <none>        9090:30000/TCP   45m

Access the Prometheus GUI

Now you should be able to use the Prometheus GUI from the webbrowser via a node-ip or node-name and its port: https://NODE-IP:30000

Screenshots Prometheus

Access the node-exporter GUI

Now you should be able to use the node-exporter GUI from the webbrowser via a node-ip or node-name and its port: https://NODE-IP:30001

Screenshot node-exporter

Grafana

Grafana will be deployed the same namespace as Prometheus.

I have created a dashboard that displays:

node metrics (like memory, disk space, CPU load, network IO, CPU tempeture)
pod and container metrics (CPU usage, memory usage, network IO)
Kubernetes API metrics
Prometheus scraper metrics
It is possible to filter on specific nodes, namespaces and/or pods.

It is running on ephemeral storage, so each time the Grafana pod is restarted, you loose configuration changes and metrics history and you will start with a fresh Grafana.

Create configmap for Grafana dashboard directory

[root@nuc kubernetes-via-kubeadm]# kubectl -n prometheus create configmap grafana-dashboard-directory --from-file=grafana-dashboard-directory.yaml
configmap "grafana-dashboard-directory" created

grafana-dashboard-directory.yaml will be mounted on /var/lib/grafana/provisioning/dashboards in the Grafana Deployment.

Create configmap for Grafana dashboard

[root@nuc kubernetes-via-kubeadm]# kubectl -n prometheus create configmap grafana-dashboard-json --from-file=grafana-dashboard.json
configmap "grafana-dashboard-json" created

grafana.ini will be mounted on /var/lib/grafana/dashboards in the Grafana Deployment.

Create configmap for Grafana datasource

First fill in an IP address of one of your own cluster nodes:

[root@nuc kubernetes-via-kubeadm]# sed -i 's/NODE-IP/192.168.11.100/g' grafana-datasource.yaml

Now create the configmap for the datasource:

[root@nuc kubernetes-via-kubeadm]# kubectl -n prometheus create configmap grafana-datasource --from-file=grafana-datasource.yaml
configmap "grafana-datasource" created

grafana-datasource.yaml will be mounted on /var/lib/grafana/provisioning/datasources in the Grafana deployment.

Create configmap for Grafana config file

[root@nuc kubernetes-via-kubeadm]# kubectl -n prometheus create configmap grafana-ini --from-file=grafana.ini
configmap "grafana-ini" created

grafana.ini will be mounted on /etc/grafana in the Grafana deployment.

Deploy Grafana

[root@nuc kubernetes-via-kubeadm]# kubectl create -f grafana-deployment.yaml -n prometheus 
deployment "grafana" created

[root@nuc kubernetes-via-kubeadm]# kubectl -n prometheus logs grafana-7fc6f87484-qnpw5 
t=2018-04-02T07:15:38+0000 lvl=info msg="Starting Grafana" logger=server version=5.0.4 commit=7dc36ae compiled=2018-03-28T11:52:41+0000
t=2018-04-02T07:15:38+0000 lvl=info msg="Config loaded from" logger=settings file=/usr/share/grafana/conf/defaults.ini
t=2018-04-02T07:15:38+0000 lvl=info msg="Config loaded from" logger=settings file=/etc/grafana/grafana.ini
t=2018-04-02T07:15:38+0000 lvl=info msg="Config overridden from command line" logger=settings arg="default.paths.data=/var/lib/grafana"
t=2018-04-02T07:15:38+0000 lvl=info msg="Config overridden from command line" logger=settings arg="default.paths.logs=/var/log/grafana"
t=2018-04-02T07:15:38+0000 lvl=info msg="Config overridden from command line" logger=settings arg="default.paths.plugins=/var/lib/grafana/plugins"
t=2018-04-02T07:15:38+0000 lvl=info msg="Config overridden from command line" logger=settings arg="default.paths.provisioning=/etc/grafana/provisioning"
t=2018-04-02T07:15:38+0000 lvl=info msg="Config overridden from command line" logger=settings arg="default.log.mode=console"
t=2018-04-02T07:15:38+0000 lvl=info msg="Config overridden from Environment variable" logger=settings var="GF_SECURITY_ADMIN_PASSWORD=*********"
t=2018-04-02T07:15:38+0000 lvl=info msg="Config overridden from Environment variable" logger=settings var="GF_AUTH_ANONYMOUS_ENABLED=true"
t=2018-04-02T07:15:38+0000 lvl=info msg="Config overridden from Environment variable" logger=settings var="GF_AUTH_ANONYMOUS_ORG_ROLE=admin"
t=2018-04-02T07:15:38+0000 lvl=info msg="Config overridden from Environment variable" logger=settings var="GF_AUTH_BASIC_ENABLED=false"
t=2018-04-02T07:15:38+0000 lvl=info msg="Path Home" logger=settings path=/usr/share/grafana
t=2018-04-02T07:15:38+0000 lvl=info msg="Path Data" logger=settings path=/var/lib/grafana
t=2018-04-02T07:15:38+0000 lvl=info msg="Path Logs" logger=settings path=/var/log/grafana
t=2018-04-02T07:15:38+0000 lvl=info msg="Path Plugins" logger=settings path=/var/lib/grafana/plugins
t=2018-04-02T07:15:38+0000 lvl=info msg="Path Provisioning" logger=settings path=/etc/grafana/provisioning
t=2018-04-02T07:15:38+0000 lvl=info msg="App mode production" logger=settings
t=2018-04-02T07:15:38+0000 lvl=info msg="Initializing DB" logger=sqlstore dbtype=sqlite3
t=2018-04-02T07:15:38+0000 lvl=info msg="Starting DB migration" logger=migrator
t=2018-04-02T07:15:38+0000 lvl=info msg="Executing migration" logger=migrator id="create migration_log table"
t=2018-04-02T07:15:38+0000 lvl=info msg="Executing migration" logger=migrator id="create user table"
t=2018-04-02T07:15:38+0000 lvl=info msg="Executing migration" logger=migrator id="add unique index user.login"
t=2018-04-02T07:15:38+0000 lvl=info msg="Executing migration" logger=migrator id="add unique index user.email"
t=2018-04-02T07:15:38+0000 lvl=info msg="Executing migration" logger=migrator id="drop index UQE_user_login - v1"
t=2018-04-02T07:15:38+0000 lvl=info msg="Executing migration" logger=migrator id="drop index UQE_user_email - v1"
t=2018-04-02T07:15:38+0000 lvl=info msg="Executing migration" logger=migrator id="Rename table user to user_v1 - v1"
t=2018-04-02T07:15:38+0000 lvl=info msg="Executing migration" logger=migrator id="create user table v2"
t=2018-04-02T07:15:38+0000 lvl=info msg="Executing migration" logger=migrator id="create index UQE_user_login - v2"
t=2018-04-02T07:15:38+0000 lvl=info msg="Executing migration" logger=migrator id="create index UQE_user_email - v2"
t=2018-04-02T07:15:38+0000 lvl=info msg="Executing migration" logger=migrator id="copy data_source v1 to v2"
t=2018-04-02T07:15:38+0000 lvl=info msg="Executing migration" logger=migrator id="Drop old table user_v1"
t=2018-04-02T07:15:38+0000 lvl=info msg="Executing migration" logger=migrator id="Add column help_flags1 to user table"
t=2018-04-02T07:15:38+0000 lvl=info msg="Executing migration" logger=migrator id="Update user table charset"
t=2018-04-02T07:15:38+0000 lvl=info msg="Executing migration" logger=migrator id="Add last_seen_at column to user"
t=2018-04-02T07:15:38+0000 lvl=info msg="Executing migration" logger=migrator id="create temp user table v1-7"
t=2018-04-02T07:15:38+0000 lvl=info msg="Executing migration" logger=migrator id="create index IDX_temp_user_email - v1-7"
t=2018-04-02T07:15:38+0000 lvl=info msg="Executing migration" logger=migrator id="create index IDX_temp_user_org_id - v1-7"
t=2018-04-02T07:15:38+0000 lvl=info msg="Executing migration" logger=migrator id="create index IDX_temp_user_code - v1-7"
t=2018-04-02T07:15:38+0000 lvl=info msg="Executing migration" logger=migrator id="create index IDX_temp_user_status - v1-7"
t=2018-04-02T07:15:38+0000 lvl=info msg="Executing migration" logger=migrator id="Update temp_user table charset"
t=2018-04-02T07:15:38+0000 lvl=info msg="Executing migration" logger=migrator id="create star table"
t=2018-04-02T07:15:38+0000 lvl=info msg="Executing migration" logger=migrator id="add unique index star.user_id_dashboard_id"
t=2018-04-02T07:15:38+0000 lvl=info msg="Executing migration" logger=migrator id="create org table v1"
t=2018-04-02T07:15:38+0000 lvl=info msg="Executing migration" logger=migrator id="create index UQE_org_name - v1"
t=2018-04-02T07:15:38+0000 lvl=info msg="Executing migration" logger=migrator id="create org_user table v1"
t=2018-04-02T07:15:38+0000 lvl=info msg="Executing migration" logger=migrator id="create index IDX_org_user_org_id - v1"
t=2018-04-02T07:15:39+0000 lvl=info msg="Executing migration" logger=migrator id="create index UQE_org_user_org_id_user_id - v1"
t=2018-04-02T07:15:39+0000 lvl=info msg="Executing migration" logger=migrator id="copy data account to org"
t=2018-04-02T07:15:39+0000 lvl=info msg="Skipping migration condition not fulfilled" logger=migrator id="copy data account to org"
t=2018-04-02T07:15:39+0000 lvl=info msg="Executing migration" logger=migrator id="copy data account_user to org_user"
t=2018-04-02T07:15:39+0000 lvl=info msg="Skipping migration condition not fulfilled" logger=migrator id="copy data account_user to org_user"
t=2018-04-02T07:15:39+0000 lvl=info msg="Executing migration" logger=migrator id="Drop old table account"
t=2018-04-02T07:15:39+0000 lvl=info msg="Executing migration" logger=migrator id="Drop old table account_user"
t=2018-04-02T07:15:39+0000 lvl=info msg="Executing migration" logger=migrator id="Update org table charset"
t=2018-04-02T07:15:39+0000 lvl=info msg="Executing migration" logger=migrator id="Update org_user table charset"
t=2018-04-02T07:15:39+0000 lvl=info msg="Executing migration" logger=migrator id="Migrate all Read Only Viewers to Viewers"
t=2018-04-02T07:15:39+0000 lvl=info msg="Executing migration" logger=migrator id="create dashboard table"
t=2018-04-02T07:15:39+0000 lvl=info msg="Executing migration" logger=migrator id="add index dashboard.account_id"
t=2018-04-02T07:15:39+0000 lvl=info msg="Executing migration" logger=migrator id="add unique index dashboard_account_id_slug"
t=2018-04-02T07:15:39+0000 lvl=info msg="Executing migration" logger=migrator id="create dashboard_tag table"
t=2018-04-02T07:15:39+0000 lvl=info msg="Executing migration" logger=migrator id="add unique index dashboard_tag.dasboard_id_term"
t=2018-04-02T07:15:39+0000 lvl=info msg="Executing migration" logger=migrator id="drop index UQE_dashboard_tag_dashboard_id_term - v1"
t=2018-04-02T07:15:39+0000 lvl=info msg="Executing migration" logger=migrator id="Rename table dashboard to dashboard_v1 - v1"
t=2018-04-02T07:15:39+0000 lvl=info msg="Executing migration" logger=migrator id="create dashboard v2"
t=2018-04-02T07:15:39+0000 lvl=info msg="Executing migration" logger=migrator id="create index IDX_dashboard_org_id - v2"
t=2018-04-02T07:15:39+0000 lvl=info msg="Executing migration" logger=migrator id="create index UQE_dashboard_org_id_slug - v2"
t=2018-04-02T07:15:39+0000 lvl=info msg="Executing migration" logger=migrator id="copy dashboard v1 to v2"
t=2018-04-02T07:15:39+0000 lvl=info msg="Executing migration" logger=migrator id="drop table dashboard_v1"
t=2018-04-02T07:15:39+0000 lvl=info msg="Executing migration" logger=migrator id="alter dashboard.data to mediumtext v1"
t=2018-04-02T07:15:39+0000 lvl=info msg="Executing migration" logger=migrator id="Add column updated_by in dashboard - v2"
t=2018-04-02T07:15:39+0000 lvl=info msg="Executing migration" logger=migrator id="Add column created_by in dashboard - v2"
t=2018-04-02T07:15:39+0000 lvl=info msg="Executing migration" logger=migrator id="Add column gnetId in dashboard"
t=2018-04-02T07:15:39+0000 lvl=info msg="Executing migration" logger=migrator id="Add index for gnetId in dashboard"
t=2018-04-02T07:15:39+0000 lvl=info msg="Executing migration" logger=migrator id="Add column plugin_id in dashboard"
t=2018-04-02T07:15:39+0000 lvl=info msg="Executing migration" logger=migrator id="Add index for plugin_id in dashboard"
t=2018-04-02T07:15:39+0000 lvl=info msg="Executing migration" logger=migrator id="Add index for dashboard_id in dashboard_tag"
t=2018-04-02T07:15:39+0000 lvl=info msg="Executing migration" logger=migrator id="Update dashboard table charset"
t=2018-04-02T07:15:39+0000 lvl=info msg="Executing migration" logger=migrator id="Update dashboard_tag table charset"
t=2018-04-02T07:15:39+0000 lvl=info msg="Executing migration" logger=migrator id="Add column folder_id in dashboard"
t=2018-04-02T07:15:39+0000 lvl=info msg="Executing migration" logger=migrator id="Add column isFolder in dashboard"
t=2018-04-02T07:15:39+0000 lvl=info msg="Executing migration" logger=migrator id="Add column has_acl in dashboard"
t=2018-04-02T07:15:39+0000 lvl=info msg="Executing migration" logger=migrator id="Add column uid in dashboard"
t=2018-04-02T07:15:39+0000 lvl=info msg="Executing migration" logger=migrator id="Update uid column values in dashboard"
t=2018-04-02T07:15:39+0000 lvl=info msg="Executing migration" logger=migrator id="Add unique index dashboard_org_id_uid"
t=2018-04-02T07:15:39+0000 lvl=info msg="Executing migration" logger=migrator id="Remove unique index org_id_slug"
t=2018-04-02T07:15:39+0000 lvl=info msg="Executing migration" logger=migrator id="Update dashboard title length"
t=2018-04-02T07:15:39+0000 lvl=info msg="Executing migration" logger=migrator id="Add unique index for dashboard_org_id_title_folder_id"
t=2018-04-02T07:15:39+0000 lvl=info msg="Executing migration" logger=migrator id="create dashboard_provisioning"
t=2018-04-02T07:15:39+0000 lvl=info msg="Executing migration" logger=migrator id="Rename table dashboard_provisioning to dashboard_provisioning_tmp_qwerty - v1"
t=2018-04-02T07:15:40+0000 lvl=info msg="Executing migration" logger=migrator id="create dashboard_provisioning v2"
t=2018-04-02T07:15:40+0000 lvl=info msg="Executing migration" logger=migrator id="create index IDX_dashboard_provisioning_dashboard_id - v2"
t=2018-04-02T07:15:40+0000 lvl=info msg="Executing migration" logger=migrator id="create index IDX_dashboard_provisioning_dashboard_id_name - v2"
t=2018-04-02T07:15:40+0000 lvl=info msg="Executing migration" logger=migrator id="copy dashboard_provisioning v1 to v2"
t=2018-04-02T07:15:40+0000 lvl=info msg="Executing migration" logger=migrator id="drop dashboard_provisioning_tmp_qwerty"
t=2018-04-02T07:15:40+0000 lvl=info msg="Executing migration" logger=migrator id="create data_source table"
t=2018-04-02T07:15:40+0000 lvl=info msg="Executing migration" logger=migrator id="add index data_source.account_id"
t=2018-04-02T07:15:40+0000 lvl=info msg="Executing migration" logger=migrator id="add unique index data_source.account_id_name"
t=2018-04-02T07:15:40+0000 lvl=info msg="Executing migration" logger=migrator id="drop index IDX_data_source_account_id - v1"
t=2018-04-02T07:15:40+0000 lvl=info msg="Executing migration" logger=migrator id="drop index UQE_data_source_account_id_name - v1"
t=2018-04-02T07:15:40+0000 lvl=info msg="Executing migration" logger=migrator id="Rename table data_source to data_source_v1 - v1"
t=2018-04-02T07:15:40+0000 lvl=info msg="Executing migration" logger=migrator id="create data_source table v2"
t=2018-04-02T07:15:40+0000 lvl=info msg="Executing migration" logger=migrator id="create index IDX_data_source_org_id - v2"
t=2018-04-02T07:15:40+0000 lvl=info msg="Executing migration" logger=migrator id="create index UQE_data_source_org_id_name - v2"
t=2018-04-02T07:15:40+0000 lvl=info msg="Executing migration" logger=migrator id="copy data_source v1 to v2"
t=2018-04-02T07:15:40+0000 lvl=info msg="Executing migration" logger=migrator id="Drop old table data_source_v1 #2"
t=2018-04-02T07:15:40+0000 lvl=info msg="Executing migration" logger=migrator id="Add column with_credentials"
t=2018-04-02T07:15:40+0000 lvl=info msg="Executing migration" logger=migrator id="Add secure json data column"
t=2018-04-02T07:15:40+0000 lvl=info msg="Executing migration" logger=migrator id="Update data_source table charset"
t=2018-04-02T07:15:40+0000 lvl=info msg="Executing migration" logger=migrator id="Update initial version to 1"
t=2018-04-02T07:15:40+0000 lvl=info msg="Executing migration" logger=migrator id="Add read_only data column"
t=2018-04-02T07:15:40+0000 lvl=info msg="Executing migration" logger=migrator id="create api_key table"
t=2018-04-02T07:15:40+0000 lvl=info msg="Executing migration" logger=migrator id="add index api_key.account_id"
t=2018-04-02T07:15:40+0000 lvl=info msg="Executing migration" logger=migrator id="add index api_key.key"
t=2018-04-02T07:15:40+0000 lvl=info msg="Executing migration" logger=migrator id="add index api_key.account_id_name"
t=2018-04-02T07:15:40+0000 lvl=info msg="Executing migration" logger=migrator id="drop index IDX_api_key_account_id - v1"
t=2018-04-02T07:15:40+0000 lvl=info msg="Executing migration" logger=migrator id="drop index UQE_api_key_key - v1"
t=2018-04-02T07:15:40+0000 lvl=info msg="Executing migration" logger=migrator id="drop index UQE_api_key_account_id_name - v1"
t=2018-04-02T07:15:40+0000 lvl=info msg="Executing migration" logger=migrator id="Rename table api_key to api_key_v1 - v1"
t=2018-04-02T07:15:40+0000 lvl=info msg="Executing migration" logger=migrator id="create api_key table v2"
t=2018-04-02T07:15:40+0000 lvl=info msg="Executing migration" logger=migrator id="create index IDX_api_key_org_id - v2"
t=2018-04-02T07:15:40+0000 lvl=info msg="Executing migration" logger=migrator id="create index UQE_api_key_key - v2"
t=2018-04-02T07:15:40+0000 lvl=info msg="Executing migration" logger=migrator id="create index UQE_api_key_org_id_name - v2"
t=2018-04-02T07:15:40+0000 lvl=info msg="Executing migration" logger=migrator id="copy api_key v1 to v2"
t=2018-04-02T07:15:40+0000 lvl=info msg="Executing migration" logger=migrator id="Drop old table api_key_v1"
t=2018-04-02T07:15:40+0000 lvl=info msg="Executing migration" logger=migrator id="Update api_key table charset"
t=2018-04-02T07:15:40+0000 lvl=info msg="Executing migration" logger=migrator id="create dashboard_snapshot table v4"
t=2018-04-02T07:15:40+0000 lvl=info msg="Executing migration" logger=migrator id="drop table dashboard_snapshot_v4 #1"
t=2018-04-02T07:15:40+0000 lvl=info msg="Executing migration" logger=migrator id="create dashboard_snapshot table v5 #2"
t=2018-04-02T07:15:41+0000 lvl=info msg="Executing migration" logger=migrator id="create index UQE_dashboard_snapshot_key - v5"
t=2018-04-02T07:15:41+0000 lvl=info msg="Executing migration" logger=migrator id="create index UQE_dashboard_snapshot_delete_key - v5"
t=2018-04-02T07:15:41+0000 lvl=info msg="Executing migration" logger=migrator id="create index IDX_dashboard_snapshot_user_id - v5"
t=2018-04-02T07:15:41+0000 lvl=info msg="Executing migration" logger=migrator id="alter dashboard_snapshot to mediumtext v2"
t=2018-04-02T07:15:41+0000 lvl=info msg="Executing migration" logger=migrator id="Update dashboard_snapshot table charset"
t=2018-04-02T07:15:41+0000 lvl=info msg="Executing migration" logger=migrator id="create quota table v1"
t=2018-04-02T07:15:41+0000 lvl=info msg="Executing migration" logger=migrator id="create index UQE_quota_org_id_user_id_target - v1"
t=2018-04-02T07:15:41+0000 lvl=info msg="Executing migration" logger=migrator id="Update quota table charset"
t=2018-04-02T07:15:41+0000 lvl=info msg="Executing migration" logger=migrator id="create plugin_setting table"
t=2018-04-02T07:15:41+0000 lvl=info msg="Executing migration" logger=migrator id="create index UQE_plugin_setting_org_id_plugin_id - v1"
t=2018-04-02T07:15:41+0000 lvl=info msg="Executing migration" logger=migrator id="Add column plugin_version to plugin_settings"
t=2018-04-02T07:15:41+0000 lvl=info msg="Executing migration" logger=migrator id="Update plugin_setting table charset"
t=2018-04-02T07:15:41+0000 lvl=info msg="Executing migration" logger=migrator id="create session table"
t=2018-04-02T07:15:41+0000 lvl=info msg="Executing migration" logger=migrator id="Drop old table playlist table"
t=2018-04-02T07:15:41+0000 lvl=info msg="Executing migration" logger=migrator id="Drop old table playlist_item table"
t=2018-04-02T07:15:41+0000 lvl=info msg="Executing migration" logger=migrator id="create playlist table v2"
t=2018-04-02T07:15:41+0000 lvl=info msg="Executing migration" logger=migrator id="create playlist item table v2"
t=2018-04-02T07:15:41+0000 lvl=info msg="Executing migration" logger=migrator id="Update playlist table charset"
t=2018-04-02T07:15:41+0000 lvl=info msg="Executing migration" logger=migrator id="Update playlist_item table charset"
t=2018-04-02T07:15:41+0000 lvl=info msg="Executing migration" logger=migrator id="drop preferences table v2"
t=2018-04-02T07:15:41+0000 lvl=info msg="Executing migration" logger=migrator id="drop preferences table v3"
t=2018-04-02T07:15:41+0000 lvl=info msg="Executing migration" logger=migrator id="create preferences table v3"
t=2018-04-02T07:15:41+0000 lvl=info msg="Executing migration" logger=migrator id="Update preferences table charset"
t=2018-04-02T07:15:41+0000 lvl=info msg="Executing migration" logger=migrator id="create alert table v1"
t=2018-04-02T07:15:41+0000 lvl=info msg="Executing migration" logger=migrator id="add index alert org_id & id "
t=2018-04-02T07:15:41+0000 lvl=info msg="Executing migration" logger=migrator id="add index alert state"
t=2018-04-02T07:15:41+0000 lvl=info msg="Executing migration" logger=migrator id="add index alert dashboard_id"
t=2018-04-02T07:15:41+0000 lvl=info msg="Executing migration" logger=migrator id="create alert_notification table v1"
t=2018-04-02T07:15:41+0000 lvl=info msg="Executing migration" logger=migrator id="Add column is_default"
t=2018-04-02T07:15:41+0000 lvl=info msg="Executing migration" logger=migrator id="add index alert_notification org_id & name"
t=2018-04-02T07:15:41+0000 lvl=info msg="Executing migration" logger=migrator id="Update alert table charset"
t=2018-04-02T07:15:41+0000 lvl=info msg="Executing migration" logger=migrator id="Update alert_notification table charset"
t=2018-04-02T07:15:41+0000 lvl=info msg="Executing migration" logger=migrator id="Drop old annotation table v4"
t=2018-04-02T07:15:41+0000 lvl=info msg="Executing migration" logger=migrator id="create annotation table v5"
t=2018-04-02T07:15:41+0000 lvl=info msg="Executing migration" logger=migrator id="add index annotation 0 v3"
t=2018-04-02T07:15:41+0000 lvl=info msg="Executing migration" logger=migrator id="add index annotation 1 v3"
t=2018-04-02T07:15:41+0000 lvl=info msg="Executing migration" logger=migrator id="add index annotation 2 v3"
t=2018-04-02T07:15:41+0000 lvl=info msg="Executing migration" logger=migrator id="add index annotation 3 v3"
t=2018-04-02T07:15:41+0000 lvl=info msg="Executing migration" logger=migrator id="add index annotation 4 v3"
t=2018-04-02T07:15:42+0000 lvl=info msg="Executing migration" logger=migrator id="Update annotation table charset"
t=2018-04-02T07:15:42+0000 lvl=info msg="Executing migration" logger=migrator id="Add column region_id to annotation table"
t=2018-04-02T07:15:42+0000 lvl=info msg="Executing migration" logger=migrator id="Drop category_id index"
t=2018-04-02T07:15:42+0000 lvl=info msg="Executing migration" logger=migrator id="Add column tags to annotation table"
t=2018-04-02T07:15:42+0000 lvl=info msg="Executing migration" logger=migrator id="Create annotation_tag table v2"
t=2018-04-02T07:15:42+0000 lvl=info msg="Executing migration" logger=migrator id="Add unique index annotation_tag.annotation_id_tag_id"
t=2018-04-02T07:15:42+0000 lvl=info msg="Executing migration" logger=migrator id="Update alert annotations and set TEXT to empty"
t=2018-04-02T07:15:42+0000 lvl=info msg="Executing migration" logger=migrator id="create test_data table"
t=2018-04-02T07:15:42+0000 lvl=info msg="Executing migration" logger=migrator id="create dashboard_version table v1"
t=2018-04-02T07:15:42+0000 lvl=info msg="Executing migration" logger=migrator id="add index dashboard_version.dashboard_id"
t=2018-04-02T07:15:42+0000 lvl=info msg="Executing migration" logger=migrator id="add unique index dashboard_version.dashboard_id and dashboard_version.version"
t=2018-04-02T07:15:42+0000 lvl=info msg="Executing migration" logger=migrator id="Set dashboard version to 1 where 0"
t=2018-04-02T07:15:42+0000 lvl=info msg="Executing migration" logger=migrator id="save existing dashboard data in dashboard_version table v1"
t=2018-04-02T07:15:42+0000 lvl=info msg="Executing migration" logger=migrator id="alter dashboard_version.data to mediumtext v1"
t=2018-04-02T07:15:42+0000 lvl=info msg="Executing migration" logger=migrator id="create team table"
t=2018-04-02T07:15:42+0000 lvl=info msg="Executing migration" logger=migrator id="add index team.org_id"
t=2018-04-02T07:15:42+0000 lvl=info msg="Executing migration" logger=migrator id="add unique index team_org_id_name"
t=2018-04-02T07:15:42+0000 lvl=info msg="Executing migration" logger=migrator id="create team member table"
t=2018-04-02T07:15:42+0000 lvl=info msg="Executing migration" logger=migrator id="add index team_member.org_id"
t=2018-04-02T07:15:42+0000 lvl=info msg="Executing migration" logger=migrator id="add unique index team_member_org_id_team_id_user_id"
t=2018-04-02T07:15:42+0000 lvl=info msg="Executing migration" logger=migrator id="Add column email to team table"
t=2018-04-02T07:15:42+0000 lvl=info msg="Executing migration" logger=migrator id="create dashboard acl table"
t=2018-04-02T07:15:42+0000 lvl=info msg="Executing migration" logger=migrator id="add index dashboard_acl_dashboard_id"
t=2018-04-02T07:15:42+0000 lvl=info msg="Executing migration" logger=migrator id="add unique index dashboard_acl_dashboard_id_user_id"
t=2018-04-02T07:15:42+0000 lvl=info msg="Executing migration" logger=migrator id="add unique index dashboard_acl_dashboard_id_team_id"
t=2018-04-02T07:15:42+0000 lvl=info msg="Executing migration" logger=migrator id="save default acl rules in dashboard_acl table"
t=2018-04-02T07:15:42+0000 lvl=info msg="Executing migration" logger=migrator id="create tag table"
t=2018-04-02T07:15:42+0000 lvl=info msg="Executing migration" logger=migrator id="add index tag.key_value"
t=2018-04-02T07:15:42+0000 lvl=info msg="Executing migration" logger=migrator id="create login attempt table"
t=2018-04-02T07:15:42+0000 lvl=info msg="Executing migration" logger=migrator id="add index login_attempt.username"
t=2018-04-02T07:15:42+0000 lvl=info msg="Executing migration" logger=migrator id="drop index IDX_login_attempt_username - v1"
t=2018-04-02T07:15:42+0000 lvl=info msg="Executing migration" logger=migrator id="Rename table login_attempt to login_attempt_tmp_qwerty - v1"
t=2018-04-02T07:15:42+0000 lvl=info msg="Executing migration" logger=migrator id="create login_attempt v2"
t=2018-04-02T07:15:42+0000 lvl=info msg="Executing migration" logger=migrator id="create index IDX_login_attempt_username - v2"
t=2018-04-02T07:15:42+0000 lvl=info msg="Executing migration" logger=migrator id="copy login_attempt v1 to v2"
t=2018-04-02T07:15:42+0000 lvl=info msg="Executing migration" logger=migrator id="drop login_attempt_tmp_qwerty"
t=2018-04-02T07:15:43+0000 lvl=info msg="Created default admin user: admin"
t=2018-04-02T07:15:43+0000 lvl=info msg="Starting plugin search" logger=plugins
t=2018-04-02T07:15:43+0000 lvl=info msg="Plugin dir created" logger=plugins dir=/var/lib/grafana/plugins
t=2018-04-02T07:15:43+0000 lvl=info msg="Initializing Alerting" logger=alerting.engine
t=2018-04-02T07:15:43+0000 lvl=info msg="Initializing CleanUpService" logger=cleanup
t=2018-04-02T07:15:43+0000 lvl=info msg="Initializing Stream Manager"
t=2018-04-02T07:15:43+0000 lvl=info msg="Initializing HTTP Server" logger=http.server address=0.0.0.0:3000 protocol=http subUrl= socket=

Deploy the Grafana service

[root@nuc kubernetes-via-kubeadm]# kubectl create -f grafana-service.yaml -n prometheus 
service "grafana" created

[root@nuc kubernetes-via-kubeadm]# kubectl -n prometheus get services
NAME            TYPE       CLUSTER-IP       EXTERNAL-IP   PORT(S)          AGE
grafana         NodePort   10.97.80.248     <none>        3000:30002/TCP   34s
node-exporter   NodePort   10.105.153.131   <none>        9100:30001/TCP   41m
prometheus      NodePort   10.96.154.129    <none>        9090:30000/TCP   45m

Access the Grafana GUI

Now you should be able to use the Grafana Dashboard from a webbrowser via a node-ip or a node-name and its port: https://NODE-IP:30002 (user name = admin, password = admin):

Screenshots Grafana

Modify the Grafana configuration

If you later on want to change the Grafana configuration you have three options:

Change the configuration via the Grafana GUI. (You can't change every thing and you loose your changes after Grafana restarts).
Edit the Grafana-*.yaml file(s), delete the configmap(s), create them again and delete the Grafana pod.
Edit the configmap(s) and delete the Grafana pod.

Tear down the cluster

Perform these steps to desolve the cluster completly and revert all changes.

Remove the Kubernetes cluster

Perform this to remove the cluster:

[root@nuc kubernetes-via-kubeadm]# kubectl drain nuc.bachstraat20 --delete-local-data --force --ignore-daemonsets
node "nuc.bachstraat20" cordoned
WARNING: Deleting pods not managed by ReplicationController, ReplicaSet, Job, DaemonSet or StatefulSet: etcd-nuc.bachstraat20, kube-apiserver-nuc.bachstraat20, kube-controller-manager-nuc.bachstraat20, kube-scheduler-nuc.bachstraat20; Ignoring DaemonSet-managed pods: kube-proxy-5ksfm
pod "kube-dns-6f4fd4bdf-kcl6k" evicted
node "nuc.bachstraat20" drained
[root@nuc ~]# kubectl delete node nuc.bachstraat20
node "nuc.bachstraat20" deleted
[root@nuc kubernetes-via-kubeadm]# kubeadm reset
[preflight] Running pre-flight checks.
[reset] Stopping the kubelet service.
[reset] Unmounting mounted directories in "/var/lib/kubelet"
[reset] Removing kubernetes-managed containers.
[reset] Deleting contents of stateful directories: [/var/lib/kubelet /etc/cni/net.d /var/lib/dockershim /var/run/kubernetes /var/lib/etcd]
[reset] Deleting contents of config directories: [/etc/kubernetes/manifests /etc/kubernetes/pki]
[reset] Deleting files: [/etc/kubernetes/admin.conf /etc/kubernetes/kubelet.conf /etc/kubernetes/controller-manager.conf /etc/kubernetes/scheduler.conf]

Now you are able to start all over again at step Bootstrap the cluster.

Enable Swapping backup on

Perform this on all nodes:

[root@nuc ~]# sed -i 's/^\#DISABLE:\(.*swap.*$\)/\1/g' /etc/fstab
[root@nuc ~]# swapon -a

Set net.bridge.bridge-nf-call-iptables back to 0

Perform this on all nodes:

[root@nuc ~]# sysctl net.bridge.bridge-nf-call-iptables=0
net.bridge.bridge-nf-call-iptables = 0

Close Kubernetes related firewall ports

Before closing the kubernetes ports in the firewall, lets take a look at the port list we had saved before we opened ports:

[root@nuc ~]# cat ${HOSTNAME}.ports
1025-65535/udp 1025-65535/tcp 80/tcp 443/tcp

Do this on all your nodes!

Now close the following ports on the master node, but leave out ports that were open before:

[root@nuc ~]# for PORT in 6443 2379 2380 10250 10251 10252 10255; do \
        firewall-cmd --permanent --remove-port=${PORT}/tcp --permanent; \
done
[root@nuc ~]# firewall-cmd --reload
[root@nuc ~]# firewall-cmd --list-ports

Close the following ports on the worker node(s), but leave out ports that were open before. If you have a node that was be acting as a master and as a worker node, then apply these also on that node.

[root@nuc ~]# for PORT in 53 8053 10250 10255 30000-32767; do \
        firewall-cmd --permanent --remove-port=${PORT}/tcp --permanent; \
done
[root@nuc ~]# firewall-cmd --reload
[root@nuc ~]# firewall-cmd --list-ports

Enable SELINUX back on

Perform this on all nodes:

[root@nuc ~]# setenforce 1
[root@nuc ~]# sed -i 's/^SELINUX=.*$/SELINUX=enabled/' /etc/sysconfig/selinux

Remove the kubeadm, kubectl and kubelet packages

Perform this on all nodes:

[root@nuc ~]# systemctl disable kubelet && systemctl start kubelet
[root@nuc ~]# dnf remove kubernetes-kubeadm kubernetes kubernetes-client

Now you have entirely reverted all changes.

Name		Name	Last commit message	Last commit date
Latest commit History 50 Commits
img		img
LICENSE		LICENSE
README.md		README.md
admin-user-clusterrolebinding.yaml		admin-user-clusterrolebinding.yaml
admin-user.yaml		admin-user.yaml
grafana-dashboard-directory.yaml		grafana-dashboard-directory.yaml
grafana-dashboard.json		grafana-dashboard.json
grafana-datasource.yaml		grafana-datasource.yaml
grafana-deployment.yaml		grafana-deployment.yaml
grafana-service.yaml		grafana-service.yaml
grafana.ini		grafana.ini
node-exporter-deployment.yaml		node-exporter-deployment.yaml
node-exporter-service.yaml		node-exporter-service.yaml
prometheus-config.yaml		prometheus-config.yaml
prometheus-deployment.yaml		prometheus-deployment.yaml
prometheus-sa-clusterrolebinding.yaml		prometheus-sa-clusterrolebinding.yaml
prometheus-sa.yaml		prometheus-sa.yaml
prometheus-service.yaml		prometheus-service.yaml

License

tedsluis/kubernetes-via-kubeadm

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kubernetes-via-kubeadm

Table of Contents

Deploy Kubernetes cluster via kubeadm

Prerequisites

Install the kubeadm, kubectl and kubelet packages

Disable selinux

Open firewall ports for Kubernetes.

Disable swapping:

net.bridge.bridge-nf-call-iptables needs to be set to 1

Bootstrap the cluster

Make sure kubectl works

Deploy a pod network

Check the node

Make master node being able to schedule pods

Install Kubernetes Dashboard

InfluxDB

Grafana

Heapster

Heapster RBAC

Kubernetes dashboard

Get Node(s) name and IP

Access the kubernetes dashboard

Clone this repo

Create an admin user

Login to the Kubernetes Dashboard

Screenshots

Deploying Prometheus

Scrape jobs

Create namespace, serviceaccount and clusterrolebinding for Prometheus

Create configmap for Prometheus config file

Deploy Prometheus

Change the Prometheus config

Deploy node-exporter

Check the Prometheus and node-exporter services

Access the Prometheus GUI

Screenshots Prometheus

Access the node-exporter GUI

Screenshot node-exporter

Grafana

Create configmap for Grafana dashboard directory

Create configmap for Grafana dashboard

Create configmap for Grafana datasource

Create configmap for Grafana config file

Deploy Grafana

Deploy the Grafana service

Access the Grafana GUI

Screenshots Grafana

Modify the Grafana configuration

Tear down the cluster

Remove the Kubernetes cluster

Enable Swapping backup on

Set net.bridge.bridge-nf-call-iptables back to 0

Close Kubernetes related firewall ports

Enable SELINUX back on

Remove the kubeadm, kubectl and kubelet packages

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